Skype released Skype 5.6 for Mac, coming with many new features including automatic updates, an improved UI for group video calling, a new full screen mode in OS X Lion, the ability to delete conversations and disable Audio Gain Control.

Pioneer's flagship headphones, the HDJ-2000s, have long been favourites among those who demand both style and sound quality. Now the Japanese company launches a black chrome model making the headphones as easy on the eye as they are on the ear.

IBM scientists today will report on a prototype optical chipset, dubbed "Holey Optochip", that is the first parallel optical transceiver to transfer one trillion bits - one terabit - of information per second.